The 3012HO has about 2 dB worth more excursion than the 2512 (6.2 mm vs 4.9 mm), so that's how much more bottom end potential it has, given suitable EQ.
The 2512 is really a sweet woofer for bass guitar, and I haven't used it mainly because my specialty is crossover design, and if we're going to use a crossover anyway, we're throwing away the nice top end that the 2512 inherently has. Imo it's a strong candidate for a crossoverless DIY build.
Is there any general, "rule-of-thumb," relatively uncomplicated
If it's overly involved, then no worries. Just wanted to ask
.